1) 5/10 + 9/10= a) 10/10 b) 14/10 c) 10/14 d) 11/10 2) 12/17 - 11/17= a) 5/17 b) 14/17 c) 9/17 d) 1/17 3) 3/2 + 6/2= a) 5/2 b) 2/9 c) 9/2 d) 14/2 4) 8/17 - 5/17= a) 3/17 b) 5/17 c) 8/17 d) 13/17 5) 18/20 + 19/20= a) 15/20 b) 20/19 c) 18/20 d) 37/20 6) 23/25 + 17/25= a) 40/25 b) 41/25 c) 43/25 d) 45/25 7) 5/12+1/12+2/12= a) 9/12 b) 7/12 c) 8/12 d) 10/12

ADIÇÃO E SUBTRAÇÃO DE FRAÇÕES

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